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vodka [1.7K]
3 years ago
15

Identify the volume of a sphere if it has a surface area of 465 square units

Mathematics
1 answer:
NeX [460]3 years ago
3 0

Step-by-step explanation:

S.A = 465

4πr²= 465

r². = 36.9

r. = 6.08

volume of a sphere = 4/3πr³

= 4/3π * 6.08³

= 941.8 cm³

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What is the sum of the first seven terms of the geometric series 2 - 10 +50 -...?
Umnica [9.8K]

Answer:

26042.

Step-by-step explanation:

What's the first term of this geometric series?

2.

What's the common ratio of this geometric series?

Divide one of the terms with the previous term. For example, divide the second term -10 with the first term 2.

\displaystyle r = \frac{-10}{2} = -5.

What's the sum of this series to the seventh term?

The sum of the first n terms of a geometric series is:

\displaystyle a_1 \cdot \frac{1-r^{n}}{1-r},

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3 years ago
What are the 2 ways to make 10's and ones out of 28 cubes
andriy [413]
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8 0
3 years ago
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Flauer [41]

Answer:

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Step-by-step explanation:

6 0
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Can someone explain the steps to finding the perimeter of a semi-circle? I didn't really understand it during class. Thanks
andriy [413]
We know that the perimeter of a cylinder is 2πr we will find it as we do always. The perimeter will be :
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= 2 pi * 20
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Because it says rounded to the nearest tenth the answer will be : 125.6 cm^3
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3 years ago
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